To advertise or not

So far I have resisted any third party advertising on the site. I do get requests, not many, mostly from B&Bs, so there could be a small market to tap. Because many of the Railway's visitors need accommodation, I offer the "Where to Stay" page http://www.wsr.org.uk/stay.htm which lists quite a number of establishments and contact details, at no cost. Now I am re-considering. More efficient ways of serving up the website is costing me more - whether it is a fast FTP link for uploading the huge number of images now coming in, or investing in a server-based database, to enable easier content management. Oh, decisions, decisions.